26,8cm=0,268m
277mm=27,7cm=0,277m
2,72dam=27,2m
lungimea corecta=1,36*20/100=1,36/5=0,272m, daca problema este corecta niciunul nu a masurat corect, dar daca la Dina in loc de 2,72dam ar fi 2,72dm atunci 2,72dm=27,2cm=0,272m si asta ar fi masuratoarea corecta